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A portable gas analyzer can monitor from one to four gases simultaneously.

LEADER 04 allows for continuous automatic monitoring of H2S, CO, O2 and combustible gases in the atmosphere and alerts you to dangerous levels of concentration: an audible signal, flashing LED indicators and a built-in vibration signal.

 Main functions and features

32-bit low-power microprocessor controller; High-contrast LCD display with real-time gas concentration; Simple one-button operation; Simple automatic calibration procedure; Verification of the device; 2-level triple alarm (visual, audible, vibration); Displays the current time on the display;

Simultaneous and continuous display of gas concentrations in the appropriate units;

Signaling a low, high level, weighted average time value of the gas concentration (TWA), short-term exposure limit value (STEL) for toxic gases;

Memory for events (100,000 records) with the ability to transfer data using a USB cable to a personal computer;

Indication of low battery;

Stainless steel crocodile clip;

The device is equipped with a periodically flashing green light beacon, indicating that the device is turned on, is in working condition and the environment meets safety standards.


Detected gases

  • Flammable gases% NKPR
  • Toxic gases (CO and H2S) mg / m3
  • Oxygen O2% vol.



Catalytic: combustible gases

Electrochemical: toxic gases, O2


Detection method

Free diffusion or gas injection using an external micropump


Measuring range

  • Combustible gases: 0 - 100% LEL
  • O2: 0 - 30% vol.
  • H2S: 0 - 100 mg / m3
  • CO: 0 - 1000 mg / m3


Time of establishment of indications T0,9D               

Not more than 30 seconds.


terms of Use       

Temperature: -40 ° C ~ + 55 ° C Relative humidity: ≤95%, without dew



3.6 V post current, lithium-ion battery, 1800 mAh

Continuous working time

20 hours


Charging time

3 hours


Sensor Life

At least 2 years


Explosion protection marking

0ExiasIICT4 Ga X


The degree of protection of the shell according to GOST 14254-96




116 * 66 * 30 mm